30. A merry-go-round, made of a ring-like platform of radius R and mass M, is revolving...
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30. A merry-go-round, made of a ring-like platform of radius R and mass M, is revolving with angular speed o. A person of mass M is standing on it. At one instant, the person jumps off the round, radially away from the centre of the round (as seen from the round). The speed of the round afterwards is 1)20 2)o 3) 4)0 2 sri Cha inya IIT Academy 31. 19-09-2020 Jr.Super60(In Com)_Jee-Main_UTM-06_Q.P i the figure shown a smooth ring is connected to rod AB, while rod CD passes through ring. At the given instant angular velocity of rod AB about hinge A is 1 rad/s and AC= CB. Instantaneous angular velocity of rod CD about hinge C is B o-lrad /s 3) V3 2) rad /s 2 rad is 1)1 rad /s -rad/s 2 Two strings support a uniform rod as shown. String at end B is cut. Which of the following is true just after cut 32. 1) Initial acceleration of A is vertical and Initial acceleration of centre of mass of rod is vertical initial acceleration of A is horizontal and initial acceleration of centre of mass of rod is vertical 3) Initial acceleration of A is vertical and initial acceleration of centre of mass of rod is horizontal 4) Initial acceleration of A is horizontal and initial acceleration of centre of mass of rod is horizontal 33 diameter of its base. This fixed axis is unfixed and the end of the radius A uniform solid hemisphere is purely rotating with angular velocityo about a perpendicular to the base becomes suddenly fixed. The hemisphere is free to rotate about this new fixed point and it starts rotating about this point with angular velocity 21o 1)- 104 2) 13 4)o 26 30. A merry-go-round, made of a ring-like platform of radius R and mass M, is revolving with angular speed o. A person of mass M is standing on it. At one instant, the person jumps off the round, radially away from the centre of the round (as seen from the round). The speed of the round afterwards is 1)20 2)o 3) 4)0 2 sri Cha inya IIT Academy 31. 19-09-2020 Jr.Super60(In Com)_Jee-Main_UTM-06_Q.P i the figure shown a smooth ring is connected to rod AB, while rod CD passes through ring. At the given instant angular velocity of rod AB about hinge A is 1 rad/s and AC= CB. Instantaneous angular velocity of rod CD about hinge C is B o-lrad /s 3) V3 2) rad /s 2 rad is 1)1 rad /s -rad/s 2 Two strings support a uniform rod as shown. String at end B is cut. Which of the following is true just after cut 32. 1) Initial acceleration of A is vertical and Initial acceleration of centre of mass of rod is vertical initial acceleration of A is horizontal and initial acceleration of centre of mass of rod is vertical 3) Initial acceleration of A is vertical and initial acceleration of centre of mass of rod is horizontal 4) Initial acceleration of A is horizontal and initial acceleration of centre of mass of rod is horizontal 33 diameter of its base. This fixed axis is unfixed and the end of the radius A uniform solid hemisphere is purely rotating with angular velocityo about a perpendicular to the base becomes suddenly fixed. The hemisphere is free to rotate about this new fixed point and it starts rotating about this point with angular velocity 21o 1)- 104 2) 13 4)o 26
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Physics for Scientists and Engineers A Strategic Approach with Modern Physics
ISBN: 978-0133942651
4th edition
Authors: Randall D. Knight
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